Back to War is the second expansion pack, and it can be played as a standalone. Cossacks: Back to War adds two new nations (Switzerland and Hungary) to the choices from Cossacks: European Wars and Cossacks: Art of War because of their influence on European history. There are also new maps, a tutorial campaign and a map-editor. It adds several units to various countries, new cannon types and alters some parameters such as building time, upgrade and building costs.Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.
